Improvement in piano-stools



PATENT: ori-Ica Elanna e. Davis, on Bosiroitf,MAssAcUsETTsQ IMPROVEMENTvIN PIANO-.STOOLSt Specification forming part of Letters Patent No.173,772, dated May 3, 1875.

' for transportation, and it consists in the construction of' parts,when combined in a pianostool, as hereinafter described.

Figure 1 is a vertical central section of a pianostool constructedaccording to my invention. Fig. 2is a horizontal section through thesaine at the point indicated by dotted lines X Y. Fig. 3 islamodification of the same. Fig. 4 is also a modification of the means forconnecting lthe legs to thevmetal hub.

4 A are the legs of a piano-stool, being -con-v nected to the metal hubB by dovetailed tenons U, fitting into corresponding recesses formed inthe metal hub B, extending from the bottom of' the hub to near the top,where they terminate'at the bottom ofthe flange C, the legs A beingdriven up into the hub B until their ends strike the iiange (Liso thatwhen the stool is used the weight upon the legs will tend'to keep themfirm in place.,

Inthe recesses I construct fastenings to i connect legs A to the hub B,Vconsisting of pins V, connecting` with .the hub B by means of Webs, asshown in Figd. This makes a very simple and strong fastening.

After the legs are driven into place, as shown in Fig. 1, I fasten aplate, F, underneath with screWsR passing intoeach leg.` I theninsertthe round tenon E on thebottom of the post D into the hole throughthe center ofthe metal hub B. This tenon passes through the hub B andplate F -a short distance, itsA end having a hole to receive thewood-screw H, whosel head is cast intothe metal ornament Gr, which isprovided with four or six -square shoulders, I', by which a wrench mayEnrnarlyee, 1876; 'application flied v be applied to the same in orderto draw the base ot' the post D down on the flange C very firmly. Aslight rim projecting upward from part of' the post and the dange. Thetop of the post is provided with the screw-nut or socket, as usual, toreceive the adjusting screw-shaft K, which is provided with abearing-plate, L, permanently connected to-` the shaft K, which has anextension, I, passing end being provided with screw-threadtting the baseT by screws P.4

This plate L is provided with four or six square shoulders, M, to whicha Wrench may be applied to hold the adjusting-shaft K from the seat W.The plate Lis provided with a small screw, s, which passes through itinto the base board -or frame T, to prevent the the actof raising thesame when desired, in the usual manner.

It will be seen that if a Wrench lbe applied -to the square shoulders Ion the ornament G,

sufficient forceto draw ,the base' of thepost D into the recess in thetop of' the iiange C, to

seat on the top of the flange C, which is cast `in one piece with themetal hub E, which has recesses for three or four legs, A, as mostdesirable. r

I am well aware that Letters Patent were granted to Joshua BriggsDecember l0, 1867, for improvements in piano-stools; therefore, Ibroadly4 disclaim said invention.

1. The adjusting screw-shaft K, having the extension I passing up intothe frame T, where itis provided with a screw-thread to fit thestationary nut N, in combination with the bearing-plate L, having squarefaces or shoulders M, for the purpose of connecting or disconnecting theseat and adthe liange C covers the joint between this` up through thesame and up through the bottom or base T of the seat W, its upper intothe nut N,l which is secured to the top of i turning, when desirable toapply or remove v seat from unscrewing, when it is revolved in it may beturned up against the plate F With make it very rigidly connected at itsbearing- Having thus described my invention, what 2. The metal hub'B,mode with Athe top .mlge C, recesses and pins V, in combination with thebottom plate F, screw H. and ornament G, having square faces o1"shoulders I',

` whereby the legs A are held in the recesses,

substantially n the manner described, as and for the purposes set forth.

y ELMER G. DAVIS.

Witnesses: Y

SYLVENS WALKER, H. S. TALBOT;

